You can also change the level filenames on the maps folder (Steam\steamapps\common\eversion\maps). An easy (and safe) way to get the achievement:

- Rename area3.map to area3_bpk.map
- Make a copy of area1.map
- Rename the copy of area1.map to area3.map
- Run game (will get you the achievement)
- Close game
- Delete area3.map
- Rename area3_bpk.map back to area3.map

You can also change the level filenames on the maps folder (Steam\steamapps\common\eversion\maps). An easy (and safe) way to get the achievement:

- Rename area3.map to area3_bpk.map
- Make a copy of area1.map
- Rename the copy of area1.map to area3.map
- Run game (will get you the achievement)
- Close game
- Delete area3.map
- Rename area3_bpk.map back to area3.map

It didn't work

Edit: Nevermind. I didn't get the popup but when i go in my stats it says that i got it so everything is fine

By the way, be careful when editing levels if you aren't done with all the other achievements. Moving around the "Secret Items" that spell out "eversion" will break the "Metaphor For The Atomic Bomb" achievement.